产品分级 meaning in Chinese

commodity grading

This reference gives examples for products classification
该产品分级参考,举例说明了如何区分产品等级)
Product classification system
园产品分级处理系统
Tolerances for fasteners - part 1 : bolts , screws , studs and nuts - product grades a , b and c
紧固件公差.第1部分:螺栓螺钉螺柱和螺母.产品分级a b和c
Circular movement , suitable for classifying in coal preparation , ore dressing , building material , power and chemical industries , altogether40 specifications , heavy duty serene for large particle materials
本系列振动筛为圆运动。可供选煤、选矿、建材、电力及化工部门等作产品分级用。本系列振动筛共有四十种规格、其中重型筛供大粒度物料分级。
Product info : the vibrating screen with circular motion is specially designed for quarry to separate crushed stone material into different sizes , and is dressing , cibstruction matefial , elecric and chenueal industies . it has a feature of advanced structure , powerful vibrating forces , low vibration noise , easy maintenance , high durability and etc
上海林沪实业有限公司专为采石场筛分料石设计生产的“山友”牌系列振动筛,运动轨迹呈圆周，也可用于选煤选矿建材电力及化工部门等作产品分级用，本公司产品具有结构先进激振力强振动噪音小易于维修坚固耐用等特点。